com.quinsoft.zeidon.utils.JoeUtils Maven / Gradle / Ivy
/**
This file is part of the Zeidon Java Object Engine (Zeidon JOE).
Zeidon JOE is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Zeidon JOE is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with Zeidon JOE. If not, see url = classLoader.getResources( resourceName ); url.hasMoreElements(); )
{
URL element = url.nextElement();
if ( task != null )
task.log().debug( "Found resource at " + element );
else
LOG.debug( "--Found resource at " + element );
count++;
if ( count > 1 )
{
// We'll allow duplicate resources if they have the same MD5 hash.
if ( md5hash == null )
md5hash = computeHash( prevUrl );
if ( ! md5hash.equals( computeHash( element ) ) )
throw new ZeidonException( "Found multiple different resources that match resourceName %s", resourceName );
if ( task != null )
task.log().warn( "Multiple, identical resources found of %s. This usually means your classpath has duplicates", resourceName );
else
LOG.warn( "Multiple, identical resources found of " + resourceName + " This usually means your classpath has duplicates" );
}
stream = ZeidonInputStream.create( element );
prevUrl = element;
}
if ( stream != null )
return stream;
//
// Try loading as a lower-case resource name.
//
String name = FilenameUtils.getName( resourceName );
if ( StringUtils.isBlank( name ) )
return null;
String path = FilenameUtils.getPath( resourceName );
String newName;
if ( StringUtils.isBlank( path ) )
newName = name.toLowerCase();
else
newName = path + name.toLowerCase();
stream = ZeidonInputStream.create( classLoader, newName );
if ( stream != null )
return stream;
// If task is null then we don't know anything else to try.
if ( task == null )
return null;
//
// Try loading with ZEIDON_HOME prefix.
//
newName = task.getObjectEngine().getHomeDirectory() + "/" + resourceName;
file = getFile( newName );
if ( file.exists() )
return ZeidonInputStream.create( file );
return null;
}
catch (Exception e)
{
throw ZeidonException.wrapException( e ).prependFilename( resourceName );
}
}
private static String computeHash( URL url ) throws Exception
{
InputStream stream = url.openStream();
try
{
return DigestUtils.md5Hex( stream );
}
finally
{
IOUtils.closeQuietly( stream );
}
}
public static ZeidonInputStream getInputStream( String resourceName, ClassLoader classLoader )
{
return getInputStream( null, resourceName, classLoader );
}
public static ZeidonInputStream getInputStream( Task task, String resourceName )
{
return getInputStream( task, resourceName, null );
}
public static ZeidonInputStream getInputStream( String resourceName )
{
return getInputStream( null, resourceName, null );
}
/**
* Returns java.io.File for a file matching path using CASE-INSENSITIVE file
* matching. This makes it easier for us to run on Windows.
*
* @param path
* @return
*/
public static File getFile( String path )
{
try
{
File file = new File( path );
if ( file.exists() )
return file;
// Try searching for the file without regard to case.
String parentPath = file.getParent();
if ( StringUtils.isBlank( parentPath ) )
return file; // No parent path so just return.
File dir = new File( parentPath );
NameFileFilter filter = new NameFileFilter( file.getName(), IOCase.INSENSITIVE );
String[] files = dir.list( filter );
if ( files == null )
return file; // We probably didn't find a directory so just return the unknown file.
if ( files.length == 1 )
return new File( parentPath + File.separator + files[ 0 ] );
if ( files.length > 1 )
throw new ZeidonException( "Found multiple matching entries for %s", path );
// We didn't find an exact match so just return.
return file;
}
catch ( Exception e )
{
throw ZeidonException.wrapException( e ).prependFilename( path );
}
}
public static String getEnvProperty( String name )
{
return getEnvProperty( name, false );
}
public static String getEnvProperty( String name, boolean required )
{
String value = System.getProperty( name );
if ( value == null )
value = System.getenv( name );
if ( required && value == null )
throw new ZeidonException( "Required environment variable '%s' is null", name );
return value;
}
/**
* Takes the filename and replaces control characters.
*
* . - If filename starts with '.' then it is prefixed with the CWD.
* %var% - Replaces %var% with the environment variable value of 'var'.
*
* @param filename
* @return
*/
public static String parseFilename( String filename )
{
String returnString = filename;
String[] arr = filename.split( "%" );
// There must be an even-numbered number of % signs. If there's not then
// there will be an even-numbered number of strings in the array.
if ( arr.length % 2 == 0 )
throw new ZeidonException("Filename '%s' has an un-paired percent sign", filename );
if ( arr.length > 0 )
{
returnString = "";
for ( int i = 0; i < arr.length; i++ )
returnString += ( i % 2 ) == 0 ? arr[i] : getEnvProperty( arr[i], true );
}
if ( returnString.startsWith( ".." ) )
returnString = System.getProperty("user.dir") + File.separator + returnString;
else
if ( returnString.startsWith( "." ) )
returnString = System.getProperty("user.dir") + File.separator + returnString.substring( 1 );
return returnString;
}
/**
* A simple wrapper around String.format. If 'strings' is an empty list then we return 'format', otherwise
* we call String.format using 'format' and 'strings'.
*
* @param format
* @param strings
* @return
*/
public static String format( String format, Object...strings )
{
if ( strings.length == 0 )
return format;
//TODO: String.format() creates a new Formatter each time. Is there a faster
// formatter available or should we create a ThreadLocal cache?
return String.format( format, strings );
}
/**
* Returns true if str consists only of digits. For performance sake we don't check
* for null or empty strings and assume the caller has already done it. This is faster
* than using regex.
*
* @param string Non-null string.
* @return False if the string contains any non-digit.
*/
public static boolean onlyDigits( String str )
{
int length = str.length();
for (int i = 0; i < length; i++)
{
char c = str.charAt(i);
if (c <= '/' || c >= ':')
return false;
}
return true;
}
/**
* Returns a DateTimeFormatter that can parse and print dates in the format of
* editString. There can be multiple edit strings which are separated by a "|"
* character. If there are more than one then the first one is considered to
* be the "print" format.
*
* NOTE: Automatically adds ISO 8601 parser: 2016-11-29T05:41:02+00:00
*
* @param editString
* @return
*/
public static DateTimeFormatter createDateFormatterFromEditString( String editString )
{
String[] strings = editString.split( "\\|" );
DateTimeParser list[] = new DateTimeParser[ strings.length + 1];
DateTimePrinter printer = null;
for ( int i = 0; i < strings.length; i++ )
{
try
{
DateTimeFormatter f = DateTimeFormat.forPattern( strings[i] );
if ( printer == null )
printer = f.getPrinter();
list[ i ] = f.getParser();
}
catch ( Exception e )
{
throw ZeidonException.wrapException( e ).appendMessage( "Format string = %s", strings[i] );
}
}
list[ strings.length ] = ISODateTimeFormat.dateTimeParser().getParser();
DateTimeFormatterBuilder builder = new DateTimeFormatterBuilder();
builder.append( printer, list );
DateTimeFormatter formatter = builder.toFormatter();
return formatter;
}
/**
* Converts a string in the standard Zeidon internal format (yyyyMMddHHmmssSSS) into a
* DateTime.
*
* NOTE: For sake of speed this method does no validation on the input string.
*
* @param str
* @return
*/
public static DateTime parseStandardDateString( String str )
{
assert str.length() >= ObjectEngine.INTERNAL_DATE_STRING_FORMAT.length();
String t;
t = str.substring( 0, 4 );
int year = Integer.parseInt( t );
t = str.substring( 4, 6 );
int month = Integer.parseInt( t );
t = str.substring( 6, 8 );
int day = Integer.parseInt( t );
if ( str.length() == ObjectEngine.INTERNAL_DATE_STRING_FORMAT.length() )
return new DateTime( year, month, day, 0, 0, 0, 0 );
int hour = 0, minute = 0, seconds = 0, millis = 0;
switch ( str.length() )
{
case 15:
case 16:
case 17:
case 18:
t = str.substring( 14 );
millis = Integer.parseInt( t );
case 13:
case 14:
t = str.substring( 12, 14 );
seconds = Integer.parseInt( t );
case 11:
case 12:
t = str.substring( 10, 12 );
minute = Integer.parseInt( t );
case 9:
case 10:
t = str.substring( 8, 10 );
hour = Integer.parseInt( t );
break; // Yes, break here.
default:
throw new ZeidonException( "Invalid length for date string" );
}
return new DateTime( year, month, day, hour, minute, seconds, millis );
}
/**
* A map to convert Zeidon date formats to Java date formats.
*/
static final ImmutableMap DATE_FORMAT_CONVERTER =
new ImmutableMap.Builder()
.put("M", "M")
.build();
/**
* Converts the old Zeidon date format specification to the Java specification so
* that we can use Java conversion. Zeidon specification is:
*
// Characters Replaced By
//
// M/m A one or two digit number that represents the
// month.
//
// MM/mm A two digit number that represents the month.
//
// MON A three character abbreviation for the month.
//
// mmm Month's three letter abbreviation. This symbol
// is case sensative; You can specify capitalization
// in the formatted value as follows:
// mmm jan
// Mmm Jan
// MMM JAN
//
// mmmm Month's full name. This symbol is case sensative;
// you can specify capitalization in the formatted
// value as follows:
//
// mmmm january
// Mmmm January
// MMMM JANUARY
//
// D/d A one or two digit number that represents the day
// of the month.
//
// DD/dd A two digit number that represents the day
// of the month.
// ddd Day of week, three letter abbreviation. This
// symbol is case sensative; You can specify
// capitalization is the formatted value as follows:
// ddd sun
// Ddd Sun
// DDD SUN
//
// dddd Day of week, full name. This symbol is case
// sensative; You can specify capitalization is the
// formatted value as follows:
// dddd sunday
// Dddd Sunday
// DDDD SUNDAY
//
// jjj Julian day.
//
// YY The last two digits of the year.
//
// YYYY The four digits of the year.
//
// HH A two digit number that represents hours based
// on a 24 hour clock, unless AM or PM is present
// in the Edit String, in which case the base is a
// 12 hour clock
//
// MI A two digit number that represents minutes.
//
// SS A two digit number that represents seconds.
//
// AM or PM Two characters that represents AM or PM. Either
// of these will cause any HH in the Edit String
// to be based on a 12 hour clock.
//
// 9 A number with 1 to 3 digits
// 99 that represents
// 999 fractions of a second.
//
// The following Edit String characters are moved from the Edit
// String to the Return String as is:
//
// ( left paren
// ) right paren
// : colon
// , comma
// - dash
// / slash
// . period
// space
//
// The following delimiters may be used to put string constants in
// the returned string.
// " quote
// ' Apostrophe
* @param zeidonFormat
* @return
*/
public static String convertZeidonDateFormatToJavaFormat( String zeidonFormat )
{
// We'll use a map to quickly convert common usage.
String javaFormat = DATE_FORMAT_CONVERTER.get( zeidonFormat );
if ( javaFormat != null )
return javaFormat;
// TODO: Implement full conversion.
throw new ZeidonException("Unsupported Zeidon date string. You may need to update JoeUtils.DATE_FORMAT_CONVERTER.");
}
public static final void sysMessageBox( String msgTitle, String msgText )
{
//JOptionPane.showMessageDialog( null, msgText, msgTitle, JOptionPane.PLAIN_MESSAGE );
JOptionPane pane = new JOptionPane(msgText, JOptionPane.INFORMATION_MESSAGE);
JDialog dialog = pane.createDialog(msgTitle);
dialog.setModalityType(ModalityType.MODELESS);
dialog.setAlwaysOnTop(true);
dialog.setVisible(true);
}
/**
* Write an OI to a string in portable file format.
*
* @param view
* @return
*/
public static String serializeView( View view )
{
StringWriter writer = new StringWriter();
view.writeOi( writer );
return writer.toString();
}
public static void RegisterJmxBean( Object bean, String beanName, String jmxAppName )
{
try
{
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
if ( ! StringUtils.isBlank( jmxAppName ) )
beanName += ",app=" + jmxAppName;
ObjectName name = new ObjectName( beanName );
// Make sure the bean doesn't already exist. If it does, unregister it.
try
{
mbs.getMBeanInfo( name ); // Throws InstanceNotFoundException if not found.
mbs.unregisterMBean( name ); // Unregister a bean if it exists.
}
catch ( InstanceNotFoundException e )
{
// If we get here then the mbean isn't currently registered. This is valid
// so we'll ignore it.
}
mbs.registerMBean(bean, name);
}
catch ( Exception e )
{
throw ZeidonException.wrapException( e )
.appendMessage( "Bean Name = %s, app=%s", beanName, jmxAppName )
.appendMessage( "Bean class = %s", bean.getClass().getName() );
}
}
/**
* A generic utility for converting different values to an Integer.
*
* @param obj
* @return
*/
public static Integer convertObjectToInteger( Object obj )
{
if ( obj == null )
return null;
if ( obj instanceof Integer )
return (Integer) obj;
if ( obj instanceof CharSequence )
return Integer.parseInt( obj.toString() );
if ( obj instanceof Number )
return ((Number) obj).intValue();
throw new ZeidonException( "Don't know how to convert %s (class=%s)", obj, obj.getClass().getName() );
}
}
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